diff --git a/src/de/dhbwstuttgart/sat/CNF/CNF.java b/src/de/dhbwstuttgart/sat/CNF/CNF.java
new file mode 100644
index 00000000..e5d9b3d0
--- /dev/null
+++ b/src/de/dhbwstuttgart/sat/CNF/CNF.java
@@ -0,0 +1,8 @@
+package de.dhbwstuttgart.sat.CNF;
+
+public class CNF {
+    /*
+    Baut die CNF Datei.
+    Hier muss man überlegen, in welchem Form die Constraints gebaut werden
+     */
+}
diff --git a/src/de/dhbwstuttgart/sat/CNF/Writer.java b/src/de/dhbwstuttgart/sat/CNF/Writer.java
new file mode 100644
index 00000000..c366686a
--- /dev/null
+++ b/src/de/dhbwstuttgart/sat/CNF/Writer.java
@@ -0,0 +1,12 @@
+package de.dhbwstuttgart.sat.CNF;
+
+import java.io.*;
+
+/**
+ * Schreibt CNFs in eine Datei im DIMACS CNF Format
+ */
+public class Writer {
+    public Writer(FileWriter output){
+
+    }
+}
diff --git a/src/de/dhbwstuttgart/typeinference/result/PairTPHEqualTPH.java b/src/de/dhbwstuttgart/typeinference/result/PairTPHEqualTPH.java
new file mode 100644
index 00000000..64d0ce0b
--- /dev/null
+++ b/src/de/dhbwstuttgart/typeinference/result/PairTPHEqualTPH.java
@@ -0,0 +1,15 @@
+package de.dhbwstuttgart.typeinference.result;
+
+import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPHOrWildcardOrGeneric;
+import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
+
+public class PairTPHEqualTPH extends ResultPair<TypePlaceholder, TypePlaceholder> {
+    public PairTPHEqualTPH(TypePlaceholder tl, TypePlaceholder tr) {
+        super(tl, tr);
+    }
+
+    @Override
+    public void accept(ResultSetVisitor visitor) {
+        visitor.visit(this);
+    }
+}